Kinematics of Young Stellar Objects Under Various Stellar Feedback

TL;DR

This study uses Gaia DR3 and APOGEE data to analyze the kinematic differences of young stellar objects in various feedback environments, finding minimal impact of feedback on their velocities and noting slight differences between YSO classes.

Contribution

It provides new insights into how different stellar feedback mechanisms influence the kinematics of young stellar objects, using large-scale Gaia and APOGEE datasets.

Findings

YSO velocities are minimally affected by feedback environments.

Class III YSOs have slightly higher velocities than Class II.

Velocity differences between YSOs and clouds are within 0-1.4 km/s.

Abstract

Based on the Gaia Data Release 3 and APOGEE datasets, we investigate the kinematic differences between young stellar objects (YSOs) and their parent clouds in five nearby star-forming regions. Overall, the 1D velocity differences between Class II YSOs and their parent molecular cloud range from [0, 1.4] km/s. In feedback environments dominated by outflows, massive stars, and supernova feedback, the corresponding velocity differences range from [0, 1.4] km/s, [0.1, 0.4] km/s, and [0.1, 1] km/s, respectively. These results indicate that YSO kinematics are not significantly affected by these different types of feedback environment. Additionally, compared to the Class II YSOs, Class III YSOs have slightly larger velocities and dispersions.